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Hardened Ground Bearing Linear Shaft – Hollow – Cut To Size

Name: Hardened Ground Bearing Linear Shaft - Hollow - Cut To Size
SKU: 331571
Availability: InStock

Brand:Ooznest

From: £0.059004
Ex VAT: £0.049170 per mm

Taxes Calculated at Checkout

Hollow Hardened Ground Bearing Linear Shafts are specialised CF60 steel shafts with an induction-hardened outer layer, designed for linear motion applications where weight is a premium. Get them project ready with our cut to size service from 100 – 3000mm.

Customise It Ready For Your Project!

Choose: 1.0 Diameter > 2.0 Length

1 .0 - Shaft Diameter

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2.0 - Required Length (mm)
Product Price

Please note, as this item is a customised product, we reserve the right to refuse returns.

SKU: N/A Category: Linear Shafts Tags: bearing, linear shaft

Hollow Hardened Ground Bearing Linear Shafts are specialised CF60 steel shafts with an induction-hardened outer layer, designed for linear motion applications. Often referred to as linear or precision shafts, these components are integral to various mechanical systems. Characterised by their high material quality, surface hardness, and precise dimensions, they provide a robust and wear-resistant solution for linear motion. Whether used as linear shafts with ball bearings and rollers, guide shafts with plain bearings, or in other mechanical applications, these Hollow Hardened Ground Bearing Linear Shafts offer unparalleled performance and longevity.

Hardened Ground Bearing Linear Description

Why choose Hollow Linear Shafts?

Use these Hollow Hardened Ground Bearing Linear Shafts where corrosion resistance is not required and weight is a premium.

If corrosion resistance is required use Chrome Plated Solid Hardened Ground Bearing Linear Shafts
If weight is not a premium use Solid Hardened Ground Bearing Linear Shafts

Pros

Weight Reduction: Hollow shafts are lighter than solid shafts of the same diameter. This can be beneficial in applications where weight is a premium, such as in aerospace or certain automotive applications.
Rotational Applications: In applications where the shaft needs to rotate at high speeds, a hollow shaft can reduce the moment of inertia, making it easier to accelerate and decelerate.
Deflection Considerations: Hollow shafts, when compared to solid shafts of identical diameter, exhibit reduced deflection due to their inherent weight. In scenarios where the shaft is horizontally oriented and minimal to no external load is anticipated, hollow shafts offer superior resistance to sagging. However, as the magnitude of the applied load escalates, there’s a threshold beyond which solid shafts become the preferable choice for optimal performance.

Cons

Diameter Tolerance: Our Hollow Linear Shafts still have a very good diameter tolerance but it is slightly lower than our solid induction hardened shafts: h7 (+0,-0.018 to -0.021mm) vs h6 (+0,-0.011 to -0.013mm)
Straightness Tolerance: Our Hollow Linear Shafts still have a very good straightness tolerance but it is slightly lower than our solid induction hardened shafts: (+/-0.1 to +/-0.2mm) vs (+/-0.2 to +/-0.3mm)
Deflection Considerations: For heavy loads solid shafts become the preferable choice for optimal performance.
Cost: Hollow shafts cost roughly 50% more than our solid shafts.

Key Features

Material: Made from CF60 Steel a high-grade carbon steel known for its exceptional strength and resilience. Its unique composition offers excellent wear resistance and toughness, making it an ideal choice for Hollow Hardened Ground Bearing Linear Shafts.
Surface Hardness: The Hollow Hardened Ground Bearing Linear Shafts boast a minimum surface hardness of 59HRC, a feature that contributes to their exceptional wear resistance. This level of hardness not only enhances the shaft’s durability but also ensures consistent performance under demanding conditions, making them suitable for various industrial applications.
Diameter Tolerance: Precision engineered with a diameter tolerance of h7 (+0,-0.018 to -0.021mm), these shafts are meticulously crafted to meet exact specifications. This tight tolerance ensures a perfect fit and alignment within mechanical systems, providing smooth operation and reducing the risk of wear and failure.

Cut-to-Size: Cut to +/- 0.2mm with manual deburring for a perfect finish, each shaft is tailored to your exact requirements. We charge per millimetre, with no additional cutting fees. This approach provides a cost-effective solution so you receive your Linear Shafts project ready.
Versatility: Suitable for a wide range of applications, the Hollow Hardened Ground Bearing Linear Shafts are a versatile solution for various mechanical needs, being hollow they are especially suited for where weight is a premium. Whether used as linear shafts with ball bearings and rollers, guide shafts with plain bearings, stretch and guide rollers, hinge pins, or other general mechanical applications, these shafts are designed to adapt to diverse requirements. Their robust construction and precision engineering make them an ideal choice for industries seeking reliability and flexibility in their components.

Experience the Difference, Why Choose Us for Your Hollow Linear Shaft Needs

Lightning-Fast Processing

Order by 1pm and we’ll despatch your Hollow Linear Shaft the same day for a rapid delivery.*

Budget-Friendly Shipping

Benefit from our cost-effective shipping rates while still receiving our top-quality Hollow Linear Shaft.

Meticulously Packed

Trust in our careful packaging process, guaranteeing your Hollow Linear Shaft arrives in pristine condition and project-ready.

WHAT OTHERS SAY

“Much better than those that came from the manufacturer.”
By Lindsey

“…The rods came carefully wrapped and packaged to prevent delivery destruction. Instantly you can see the quality difference and are perfectly straight and being not much more than the cheap ones...”
By Matthew

“Top quality product. smooth, straight and solid just how they should be.”
By Paul

Reviews collected on Trustpilot

* Please note, sometimes on very large orders containing cutting/customisations, extra time is required to prepare and package, so despatch may take longer. If you require a specific despatch for a large order, please contact us before ordering.

Shaft Diameter	12mm, 16mm, 20mm, 25mm, 30mm

Customisation Guide

We offer a broad selection of customisation options for our linear shafts.
Read the guidelines below for help choosing the correct customisations for your project.

1.0 - SHAFT DIAMETER

Choose from a range of shaft diameters. This diameter is the outer diameter of the shaft.

2.0 - Required Length

Required length is the total length of the linear shaft in millimetres (mm).

A liquid-cooled machine is used to cut the linear shaft. This ensures that the shaft remains cool during the cutting process, preserving the diameter tolerance.

We will manually de-burr the external and internal ends of the shaft with a small chamfer.

Please note the linear shafts are delivered with a protective oil coating. This coating is not intended as bearing lubrication. We recommend removing this coating with Isopropyl Alcohol or a similar solvent. After removal, be sure to apply an appropriate bearing grease tailored to your specific application.

If the protective oil coating is removed and the shafts are not greased accordingly, they will become vulnerable to corrosion and rust.

Technical Specification

Outer Diameter	12mm	16mm	20mm	25mm	30mm
Inner Diameter (Approximately)	4mm	7mm	14mm	15.6mm	18.3mm
Outer Diameter Tolerance	+0.000mm, -0.018mm	+0.000mm, -0.018mm	+0.000mm, -0.021mm	+0.000mm, -0.021mm	+0.000mm, -0.021mm
Roundness	+/- 0.008mm	+/- 0.008mm	+/- 0.009mm	+/- 0.009mm	+/- 0.009mm
Straightness	+/- 0.3mm	+/- 0.3mm	+/- 0.2mm	+/- 0.2mm	+/- 0.2mm
Material	CF60 Steel	CF60 Steel	CF60 Steel	CF60 Steel	CF60 Steel
Tensile Strength	650N/mm² minimum	650N/mm² minimum	650N/mm² minimum	650N/mm² minimum	650N/mm² minimum
Hardness	59HRC minimum	59HRC minimum	59HRC minimum	59HRC minimum	59HRC minimum
Hardening Depth	0.6mm minimum	0.6mm minimum	0.9mm minimum	0.9mm minimum	0.9mm minimum
Weight	0.790g/mm	1.280g/mm	1.250g/mm	2.350g/mm	3.500g/mm
Length Range	100 - 3000mm	100 - 3000mm	100 - 3000mm	100 - 3000mm	100 - 3000mm
Length Tolerance	+/- 0.5mm	+/- 0.5mm	+/- 0.5mm	+/- 0.5mm	+/- 0.5mm
X Area Moment Of Inertia (Ixx)	100.531 x10-11m⁴	309.913 x10-11m⁴	596.824 x10-11m⁴	1626.76 x10-11m⁴	3425.56 x10-11m⁴
Y Area Moment Of Inertia (Iyy)	100.531 x10-11m⁴	309.913 x10-11m⁴	596.824 x10-11m⁴	1626.76 x10-11m⁴	3425.56 x10-11m⁴

Loads & Deflection

The subsequent tables illustrate the maximum loads and deflections for the Hardened Ground Bearing Linear Shaft under various load conditions.

To calculate the beam deflections, the formulas provided in this resource have been used: https://mechanicalc.com/reference/beam-deflection-tables

For additional assistance, a helpful beam deflection calculator is available at: https://deflection.app/?language=en

To calculate the maximum column load, the formulas provided in this resource have been used: https://tribby3d.com/blog/column-buckling/ (A value of 1.3 has been used for K)

Please be aware that the figures provided are indicative only. They primarily consider beam/column deflection under a static load. However, real-world performance of a beam/column can also be influenced by factors such as dynamic loads, shear stress, bending stress, torsion, buckling, fatigue, resonance, and the specific material properties of the beam/column. Therefore, it is strongly advised to conduct personal design calculations and consider these additional factors to ensure the chosen profile is suitable for the specific application. Furthermore, we recommend applying appropriate safety factors for your industry to these calculated values. Common safety factors range between 2 and 3 for non-critical applications, providing an additional margin of safety against unforeseen circumstances or inaccuracies in the calculations.

SHAFT DIAMETER

Fixed Cantilever - End Point Load

	Length (mm)
Weight Applied (kg)	100	200	300	400	500	1000
0 (Self weight)	0.0	0.0	0.0	0.1	0.3	4.8
0.25	0.0	0.0	0.1	0.4	0.8	8.9
0.50	0.0	0.1	0.3	0.6	1.3	13.0
1.00	0.0	0.1	0.5	1.2	2.3	21.1
2.00	0.0	0.3	0.9	2.2	4.4	37.4
3.00	0.0	0.4	1.4	3.2	6.4	53.6
5.00	0.1	0.7	2.2	5.3	10.5	86.2

The table above presents the deflections at the end of the beam. The red values in the table indicate situations where the deflection exceeds a deflection of 0.3mm.

Fixed Cantilever - Evenly Distributed Load

	Length (mm)
Weight Applied (kg)	100	200	300	400	500	1000
0 (Self weight)	0.0	0.0	0.0	0.1	0.3	4.8
0.25	0.0	0.0	0.1	0.2	0.4	6.4
0.50	0.0	0.0	0.1	0.2	0.5	7.9
1.00	0.0	0.0	0.1	0.3	0.7	10.9
2.00	0.0	0.0	0.1	0.4	1.1	17.0
3.00	0.0	0.0	0.2	0.6	1.4	23.1
5.00	0.0	0.1	0.3	0.9	2.2	35.3

The table above presents the deflections at the end of the beam. The red values in the table indicate situations where the deflection exceeds a deflection of 0.3mm.

Fixed Beam - Centre Point Load

	Length (mm)
Weight Applied (kg)	250	500	750	1000	1250	1500
0 (Self weight)	0.0	0.0	0.0	0.1	0.2	0.5
0.50	0.0	0.0	0.1	0.2	0.5	0.9
1.00	0.0	0.0	0.1	0.4	0.7	1.4
2.00	0.0	0.1	0.2	0.6	1.2	2.2
3.00	0.0	0.1	0.4	0.9	1.7	3.1
5.00	0.0	0.2	0.6	1.4	2.7	4.8
10.00	0.0	0.3	1.1	2.6	5.2	9.1

The table above presents the deflections at the middle of the beam. The red values in the table indicate situations where the deflection exceeds a deflection of 0.3mm.

Fixed Beam - Evenly Distributed Load

	Length (mm)
Weight Applied (kg)	250	500	750	1000	1250	1500
0 (Self weight)	0.0	0.0	0.0	0.1	0.2	0.5
0.50	0.0	0.0	0.1	0.2	0.4	0.8
1.00	0.0	0.0	0.1	0.2	0.6	1.2
2.00	0.0	0.0	0.1	0.4	0.9	1.8
3.00	0.0	0.0	0.2	0.5	1.2	2.4
5.00	0.0	0.0	0.2	0.7	1.8	3.7
10.00	0.0	0.1	0.4	1.4	3.3	6.9

The table above presents the deflections at the middle of the beam. The red values in the table indicate situations where the deflection exceeds a deflection of 0.3mm.

Fixed Column - Maximum Weight

Length (mm)	500	1000	1500	2000	2500	3000
Maximum Weight (kg)	479	120	53	30	19	13

The table above presents the maximum vertical load on a fixed column. The effective length value (K) used in these calculations is 1.3. We recommend applying appropriate safety factors for your industry to these calculated values. Common safety factors range between 2 and 3 for non-critical applications.